Physical activity during childhood and the teen years

Physical activity during adulthood lowers breast cancer risk [118-123]. Researchers are now studying whether being active during childhood and the teen years also lowers breast cancer risk.

Findings to date are mixed [129-130]. Some findings show women who were more active as children and teens may have a lower risk of breast cancer compared to women who were less active as children and teens [130].

Other findings show physical activity during childhood and the teen years may slightly lower the risk of breast cancer before menopause, but has no impact on the risk of breast cancer after menopause [129].